Influence of phase transformations on the mechanical properties of high-strength austenitic Fe-Mn-Cr steel

被引：103

作者：

Bracke, L ^{[1
]}

Mertens, G

Penning, J

De Cooman, BC

Liebeherr, M

Akdut, N

机构：

[1] Univ Ghent, Dept Met & Mat Sci, B-9000 Ghent, Belgium

[2] Arcelor Ind Res Lab, Zelzate, Belgium

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2006年 / 37A卷 / 02期

关键词：

D O I：

10.1007/s11661-006-0002-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of Cr and N additions on the mechanical properties of a Fe-Mn-C steel was investigated. The chemical composition was found to have a pronounced effect on the strain-hardening behavior, due to the strain-induced sequence of the gamma -> epsilon -> alpha' martensitic transformations. It was found that Cr and N suppress this transformation sequence. At Cr levels higher than 7.5 mass pct, no alpha' martensite was formed, which led to a pronounced improvement of the ductility. The differences in transformation behavior can be attributed to the change in the intrinsic stacking-fault energy (ISFE): in the compositional range studied, Cr and N additions cause an increase of the ISFE.

引用

页码：307 / 317

页数：11

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